====== SIP Protocol Info ======

  * [[FAQ|SIP Protocol Frequently Asked Questions]]
  * Some comments on [[digest]] authentication.
  * [[Underspecified]] situations in the protocol
  * [[GRUU]] notes
  * [[Status Codes]] we send back to SIP UAs
  * [[matching_using_to_header|Role of the To header]] in SIP requests.
  * Some SIP protocol and stack [[tests]]
  * [[T.38]] examples